THE WIRELESS REMOTE SENSOR SYSTEM IS MADE UP OF ONE RECEIVER AND AT LEAST ONE WIRELESS SENSOR.- Up to 8 Wireless Sensors may be used with 1 Receiver. (Unit ID #0 - 7)- The Receiver automatically averages all the temperatures it receives from any and all Wireless Sensors, up to 8 on the same House Code as the receiver, and reports the average to the thermostat.- The Receiver will only 'listen' to Wireless Sensors with the same HouseCode as the Receiver, and will 'ignore' Sensors with different House Codes than the Receiver.- There can be up to 16 Remote Sensor Systems in each installation.- If more than 1 Wireless Sensor is used with 1 Receiver, then all Sensors and the Receiver must have the same House Code for proper operation.- If more than 1 Wireless Sensor is used with 1 Receiver, than each Sensor must have a different Unit ID.

SUGGESTIONS FOR USE OF ONE WIRELESS REMOTE SENSOR:- To report the Outdoor Temperature when using a compatible Residential thermostat. It is recommended to attach the Wireless Sensor to a North facing wall where it will not be in direct sunlight or the spray of sprinklers.- To report the temperature of a room, such as that of a Baby's room when using a compatible Residential thermostat.- To control to, or to read only, the temperature at the return duct when compatible Commercial thermostat.- To control the temperature in a space that is different from where the compatible Commercial thermostat is located.

SUGGESTION FOR USE OF MULTIPLE WIRELESS REMOTE SENSORS:- To control to an average of more than one Wireless Sensor in a large open space using a compatible Commercial thermostat. This type of application would include large, open office areas

We provide heat to a second floor apartment by a second boiler. We need a remote control solution to prevent misuse by our tenants. I combined this unit with the Venstar T2900 programmable thermostat, the remote sensor (ACC0414RF), and the 2 wire kit (ACC0436), since ours is a heat only system. Installation of the receiver was simple. The only drawback is that the T2900 doesn't have space to conceal the receiver inside the unit and I had to cut a small hole in the wall behind the thermostat to conceal the receiver.

I use the remote sensor with the T1900 thermostat so we can control to a temperature read from a bedroom location rather than the hallway where there are no HVAC vents (and the thermostat is mounted). This way we can keep the bedroom doors shut so the AC doesn't run all night and save energy.

OK, my bad, I put the comments about this receiver under the remote sender. But there's something important to add about this item. You'll need to leave it hanging outside (take care not to crush the wires) when you put the T1800 back together so you can verify proper operation. Afterwards you can tuck it away. Try to have a pretty clear line of sight to the sender to ensure receiving a good signal.

Mount the sender out of direct sunlight.

Oh, and the most important thing of all? The White wire goes to the RS2 terminal.

We provide heat to a second floor apartment by a second boiler. We need a remote control solution to prevent misuse by our tenants. I combined this unit with the Venstar T2900 programmable thermostat, the remote sensor (ACC0414RF), and the 2 wire kit (ACC0436), since ours is a heat only system. Installation of the receiver was simple. The only drawback is that the T2900 doesn't have space to conceal the receiver inside the unit and I had to cut a small hole in the wall behind the thermostat to conceal the receiver.

I use the remote sensor with the T1900 thermostat so we can control to a temperature read from a bedroom location rather than the hallway where there are no HVAC vents (and the thermostat is mounted). This way we can keep the bedroom doors shut so the AC doesn't run all night and save energy.

OK, my bad, I put the comments about this receiver under the remote sender. But there's something important to add about this item. You'll need to leave it hanging outside (take care not to crush the wires) when you put the T1800 back together so you can verify proper operation. Afterwards you can tuck it away. Try to have a pretty clear line of sight to the sender to ensure receiving a good signal.

Mount the sender out of direct sunlight.

Oh, and the most important thing of all? The White wire goes to the RS2 terminal.

THE WIRELESS REMOTE SENSOR SYSTEM IS MADE UP OF ONE RECEIVER AND AT LEAST ONE WIRELESS SENSOR.- Up to 8 Wireless Sensors may be used with 1 Receiver. (Unit ID #0 - 7)- The Receiver automatically averages all the temperatures it receives from any and all Wireless Sensors, up to 8 on the same House Code as the receiver, and reports the average to the thermostat.- The Receiver will only 'listen' to Wireless Sensors with the same HouseCode as the Receiver, and will 'ignore' Sensors with different House Codes than the Receiver.- There can be up to 16 Remote Sensor Systems in each installation.- If more than 1 Wireless Sensor is used with 1 Receiver, then all Sensors and the Receiver must have the same House Code for proper operation.- If more than 1 Wireless Sensor is used with 1 Receiver, than each Sensor must have a different Unit ID.

SUGGESTIONS FOR USE OF ONE WIRELESS REMOTE SENSOR:- To report the Outdoor Temperature when using a compatible Residential thermostat. It is recommended to attach the Wireless Sensor to a North facing wall where it will not be in direct sunlight or the spray of sprinklers.- To report the temperature of a room, such as that of a Baby's room when using a compatible Residential thermostat.- To control to, or to read only, the temperature at the return duct when compatible Commercial thermostat.- To control the temperature in a space that is different from where the compatible Commercial thermostat is located.

SUGGESTION FOR USE OF MULTIPLE WIRELESS REMOTE SENSORS:- To control to an average of more than one Wireless Sensor in a large open space using a compatible Commercial thermostat. This type of application would include large, open office areas